Abstract: A rotor for a brushless motor is resistant to degradation in alternative fuels and has desirable magnetic properties. A stator for a brushless DC motor includes coils wound both clockwise and counterclockwise around teeth of a back iron. Pairs of the coils are electrically connected in parallel.

Abstract: A power module, a control board and a heat sink are provided on one axial side of a shaft of an electric motor, which consists of a motor case, a stator, a rotor, the shaft and the like. The power module is electrically connected with extraction lines, which extend from a coil wound around the stator, and supplies a drive current to the coil. The control board for controlling switching of the power module is provided on a motor case side of the power module. The heat sink is provided on a side of the control board opposite to the motor case. Thus, when setting of an output of the electric motor is changed, a body size of the heat sink can be changed without changing a positional relationship between the control board and the electric motor and a positional relationship between the power module and the electric motor.

Abstract: A power module of a drive unit of an electric motor is formed by inserting multiple power transistors, which supply a drive current to a coil wound around a stator or a rotor, and wirings connecting the power transistors in a resin, which is formed in the shape of a plate, by resin molding. Electronic components such as aluminum electrolytic capacitors, a choke coil and a first connector are provided in a board thickness direction of the power module and are electrically connected with the wirings of the power module. Thus, a construction for electrically connecting the wirings of the power module formed by the resin molding and the electronic components can be simplified.

Abstract: A surface magnet type rotor and an inner magnet type rotor having good motor characteristics in which bonding strength is high between a magnet section and a soft magnetic yoke section, and structural reliability is high even in high speed use, and its producing method. The rotor comprises an anisotropic bond magnet section and a soft magnetic section wherein the anisotropic bond magnet section is preformed in magnetic field and then formed to be integrated with the soft magnetic section in nonmagnetic field. Subsequently, it is heat hardened to produce a surface magnet type rotor. Magnet units, each having a magnetic pole composed by bonding a pair of permanent magnets such that the directions of magnetization become symmetric with respect to the bonding surface, are linked such that magnetic poles of different polarities appear alternately on the magnetic action surface thus forming an anisotropic magnet body.

Abstract: Electrical machine with a rotor with magnets carried by an annular carrier, in which a magnetic field is created over an air gap between two rotor parts, at which an ironless stator with windings is arranged. A space saving machine is achieved with a stator which is assembled of sections with channels for circulation of coolant, and which has windings with an annular, compact central part providing the active part of the stator. A method for manufacturing stator sections for such electrical machines is described, where a winding is embedded in an electrically insulating casting material for providing a rigid element. A coil is arranged in one part of a bisected shell housing or a bisected casting mold, and the shell housing or mould is closed, casting material is introduced through an opening and the inner part of the housing or mould is subject to underpressure and possibly vibration.

Abstract: A pump assembly with a motor housing (4) and with a terminal box (6) which includes at least one peripheral section (10) situated on the outer periphery of the motor housing (4). A cover (12) is provided, which in each case at least partly covers the motor housing (4) and the peripheral section (10) of the terminal box (6) on an axial end-side. The cover (12) is designed in a heat-conducting manner and at an inner side thereof is in contact with at least one electronic complement (14).

Abstract: A motor assembly includes a flexible base mount having an integrally formed axial tube, support ledges disposed on the axial tube to axially support a stator disposed on the axial tube to be firmly engaged with the stator for further ensuring immobility, a flexible mounting shell member axially insertable into the axial tube and having a receptacle cap at a lower end thereof, retaining and retained members disposed between the mounting shell member and the axial tube to guard relative movement therebetween, and an antifriction bearing disposed in the mounting shell member to bear a revolving shaft of a rotor. All the constituted components can be standardized and modularized. With such simple construction, the motor assembly can be easily assembled.

Abstract: A stator for a DC brushless motor includes an annular insulating ring integrally formed from an insulating material. The annular insulating ring includes an outer peripheral face and an inner peripheral face. A plurality of winding portions extends from at least one of the outer and inner peripheral faces. A coil unit is wound around each of the plurality of winding portions. The stator can be utilized in various DC brushless motors. Since the stator does not include conventional silicon steel plates and is comprised of an annular insulating ring and a coil unit, advantages including low manufacturing costs, assembling convenience, possible reduction in the axial height, and high rotational stability are obtained.

Abstract: An external rotor for a direct current drive motor with a side wall, an end cover, a cavity, an opening, a base, a magnetic tile, a center hole, and a magnetic yoke shell. A method for producing an external rotor for a direct current drive motor by integrally forming by injection molding a magnetic yoke shell and multiple magnetic tiles; forming a side wall on said magnetic yoke shell and an end cover at the bottom of said side wall; forming a base at the center of said end cover; and integrally forming by injection molding said base and a rotating spline.

Abstract: A motor includes: a stator including a stator iron core on which a winding is wound; a rotor including a rotating body that holds a magnet in a circumferential direction to face the stator and a shaft that fastens the rotating body to penetrate a center of the rotating body; a bearing that supports the shaft; and two conductive brackets that fix the bearing. The two brackets are electrically connected to each other, and a capacitor serving as an impedance adjusting member that adjusts impedances between the stator iron core and the electrically connected two brackets is arranged.

Abstract: A brushless motor includes a stator molded integrally with a resin having a fixing member including a stator iron core and a winding wound thereon, a rotor of a disk-like iron core holding a ferrite resin magnet in a circumferential direction, the rotor arranged to face the stator about a shaft, a bearing rotatably supporting the shaft, and conductive brackets fixing the bearing. The brackets are electrically connected to each other with a conducting pin in the stator.

Abstract: A motor includes: a stator molded integrally with an insulating resin having a fixing member including a stator iron core and a winding wound thereon; a rotor arranged to face the stator about a shaft; a bearing rotatably supporting the shaft; a bracket fixing the bearing; and a drive circuit substrate having a drive circuit mounted thereon for driving the winding. The stator iron core is electrically connected to a ground serving as a reference point of a zero potential on the drive circuit substrate through a conductive member.

Abstract: An electric machine includes a stator stack of laminations, pierced with a cylindrical-walled passage intended to house a rotor that rotates about an axis inside the stator, creating an air gap between the two, and a casing enclosing the resulting assembly in whole. The stator includes a magnetic circuit of laminations stacked between first and second terminal faces crossed, firstly, by the cylindrical passage and, secondly, by a series of slots housing conductors, which are folded over, in winding heads potted in a block of resin, from one slot to the next as they leave each terminal face, to form coils. An external lateral wall of the magnetic circuit is blocked on an inside portion in an internal lateral wall of a casing sleeve to form an entity capable of withstanding torques generated in the air gap during operation.

Abstract: An object is to provide a rotor manufacturing method capable of reducing a rotor unbalance amount by controlling a magnet arrangement position in a rotor core and improving work efficiency when fixing a magnet to the rotor core by using resin. A lower surface of a rotor core is arranged in a lower mold. A magnet is arranged in a lower mold. A magnet is contained in each of magnet containing holes formed in the rotor core in such a manner that a predetermined space is assumed between an upper surface of the rotor core and an upper surface of the magnet. An upper mold is arranged on the upper surface of the rotor core. The upper mold and the lower mold apply a pressure to the rotor core and a molten resin is supplied with pressure from an internal diameter side via the predetermined space into the plurality of magnet containing holes from respective cylinder arranged in the upper mold. Thus, the magnets are molded by resin while pressing the magnets toward the outer diameter side of the magnet containing holes.

Abstract: A stator arrangement of a generator for a wind turbine includes a plurality of stator segments substantially forming the stator of the generator. Each stator segment has at least one stator winding and/or a laminate stack of sheets wherein each stator segment is moulded or casted into a material with an electrical insulating property and/or with a non-corroding quality and/or with a heat conductive property. The direct drive generator is also provided having such a stator arrangement and a wind turbine is provided having such a direct drive generator.

Abstract: A stator core is formed of a main core including a first segment core, second segment core, and plate body, and a third segment core (I-shaped core). A rotor is disposed in a rotor insertion hole of the stator core, and an output shaft of the rotor is supported by a bearing unit. A resin molded body covers a winding of an exciting section of the motor, a circuit wiring board, and a part of a power supply connecting body. The resin molded body also covers a part of the third segment core (I-shaped core). A rotary vane or the like is mounted near the tip of the output shaft, and a blower or the like is formed.

Abstract: A laminated core block includes a plurality of core members made of magnetic sheets stacked one on top of another, the plurality of core members including first and second core members which adjoin in a laminating direction, and a thermoplastic resin strand placed between the first and second core members. The thermoplastic resin strand is arranged to pass along one side surface of the first core member, between the first and second core members and along a side surface of the second core member on a side opposite to the aforementioned side surface of the first core member in this order. The first and second core members are bonded to each other by melting and curing the thermoplastic resin strand.

Abstract: An apparatus for routing conductors, such as signal carrying conductors, from within an electro-mechanical machine housing to a location outside the housing is provided. The apparatus includes a base for fitting in a first opening in the housing and securing a lower portion of the apparatus to the housing. The apparatus also includes a channel for carrying the conductors, which may be formed in a shape corresponding to a profile of a portion of the housing. The apparatus includes a fastener, such as a snap-type mechanical fastener, for securing the apparatus to the housing.

Abstract: A power supply connecting member is configured by a housing of the power supply connecting member molded with a terminal of the power supply connecting member by a resin. The terminal of the power supply connecting member has three bent portions, two bent portions are perpendicular to an axial direction before the terminal is bent, and the remaining bent portion is parallel to the axial direction before the terminal is bent. A distal end on a bending side of the terminal of the power supply connecting member is inserted into the power supply connecting member housing to configure the power supply connecting member. An output shaft support portion unit is configured such that a bearing to hold a rotor and an elastic member (spring for example) to hold the bearing are stored in a bottom cover (lower cover) having a recessed portion and a lid cover (upper cover) is press-fitted.

Abstract: The invention relates to a motor gearbox unit (1), particularly for a windshield wiper system in a motor vehicle, comprising an electric motor (12) and a gearbox (14) driven by the electric motor (12), and a housing (2). According to the invention, the housing 2) is designed as a shell housing receiving both the electric motor (12) and the gearbox (14) and comprises a first and a second shell part (3, 4).

Abstract: A molded motor includes an annular stator formed by molding coils in resin, a rotor disposed in an internal space which is formed radially inside the stator, a cover covering the internal space, and an elastic member sandwiched between the cover and the stator and located at a more inner side in the radial direction of the stator from the coils.

Abstract: An electric motor in which the cost of parts and the cost of processing are reduced by installing a fan cover, a capacitor installation box, and a foot plate on a molded stator without addition of installation parts. In the electric motor (200), the stator (100) is molded using a thermosetting resin. The stator (11) after the molding has a foot plate installation section (13) to which the foot plate (19) is installed, and prepared holes for screws for fixing the foot plate (19) are exposed on the foot plate installation section (13).

Abstract: An object is to provide a motor that is designed to reduce the parts costs and the processing costs, without additional parts for fixing, by incorporating a fan cover, a condenser assembly box, and a foot plate into a molded stator. A motor 200 according to this invention has a stator 100, which is molded of a thermosetting resin as a molded stator 11. The motor 200 is characterized in that the molded stator 11 includes a foot plate mounting portion 13 where a foot plate 19 is mounted, and in that prepared holes for screw fixing of the foot plate 19 are exposed from a mold surface at the foot plate mounting portion 13.

Abstract: Disclosed is an improved coin-type vibration motor, which has a larger vibration force and is not easily broken even by a strong impact. A permanent magnet in which an N-pole and an S-pole are alternately arranged is disposed centering around a rotation shaft fitted in a center of an inside of the case, and a brush having an upwardly and slantingly extending shape is connected with a flexible printed circuit disposed between the permanent magnet and a bottom surface of the case. A rotor spaced apart from an upper part of the permanent magnet and rotatably supported by the rotation shaft according to that a rotation center is fitted in the rotation shaft. A wiring board including a commutator is assembled with a lower part of a bearing, and plural coils symmetrically spaced apart from each other centering around the rotation shaft and a vibrator of high specific gravity are sequentially layered on the wiring board.

Abstract: A molded motor including a stator including a housing formed by integrally molding an armature winding and a printed circuit board with resin containing a fibrous reinforcing material and filler; a magnet rotor rotatably disposed to face the stator; and a plurality of lead wires led out to outside. The printed circuit board is provided with a plurality of lands connecting the lead wires by soldering, and a round hole between the plurality of lands filled with the resin, and the reinforcing material is oriented in a board thickness direction of the printed circuit board.

Abstract: A motor may include a motor base plate, a bearing holder provided with a through hole whose both ends hold bearings and vertically disposed with respect to the motor base plate, a stator provided with a center hole and fixed to an outer peripheral face of the bearing holder, and a rotor having a shaft supported by the bearings, a rotor case fixed to the shaft, and a magnet fixed on an inner peripheral face of the rotor case. The bearing holder may be provided with a stepped part, protruded toward a radial direction. The stator may be provided with a first resin block structured so that an end face on a motor base plate side of the stator core is molded with resin to cover a coil wound around the stator core, and inner peripheral faces of the stator core and the first resin block structure the center hole, and the center hole of the stator is press-fitted and fixed to the bearing holder until an end face of the first resin block is abutted with the stepped part.

Abstract: A permanent magnet rotor for an brushless electric motor of the kind having an internal stator, has a supporting structure made of molded plastic that includes an essentially disc-shaped portion to which a shaft is centrally connected. The periphery of the disc is joined to an essentially cylindrical cage portion which extends coaxially around the shaft. A plurality of magnetically conductive yokes are disposed in the cage portion. The yokes are shaped as ring segments which as a whole form an essentially cylindrical wall. A plurality of ring segment permanent magnets are each disposed astride the junction of a pair of adjacent yokes. Each yoke has a dimension which increases from the circumferential ends thereof towards its circumferentially intermediate portion, such that the cross-sectional area of the yoke in a radial plane correspondingly increases from the ends thereof towards its intermediate portion.

Abstract: An electric motor includes: a rotor configured to rotate about a rotating shaft; a stator having a coil; a mold resin configured to mold the stator, and a case body configured to hold the stator molded by the mold resin. The stator comprises a bus ring which is provided along a circumferential direction of the stator and which is connected to the coil. The bus ring is provided on a side opposite to the case body.

Abstract: A vibrating motor has a shaft, a stator including a yoke having pole teeth extending toward an axis of the shaft from an inner circumference and coils wound around the pole teeth, a rotor including an eccentric weight formed on a radially outer surface of the shaft, and a permanent magnet integrally formed with the eccentric weight, and a bearing device rotatably supporting the rotor maintaining clearance between the inner circumference of the pole teeth and the rotor. The rotor has a structure in which the shaft, the eccentric weight, and the permanent magnet are integrally formed with each other by a thermoplastic magnetic material composing the permanent magnet.

Abstract: There is provided an electrical motor in which the dimensional accuracy of a stator is increased more easily, and the influence exerted on a magnetic circuit is kept as little as possible. In an electrical motor in which the stator 3 formed with n number (n is a positive integer) of teeth 33 in a row in a straight line form is bent into an annular shape and the end parts thereof are connected to each other, the sum of opening angles ? of a cutout 35 formed between segments of the stator 3 is made larger than 360 degrees, and a minute clearance is formed between the opposed surfaces of the cutout 35 when the stator is bent into an annular shape.

Abstract: A brushless motor is smaller, flatter, and lighter but is easy to assemble and has reduced motor vibration. An attachment base is integrally molded by two-color extrusion molding using a first resin material that forms a base main portion and a second resin material that forms a support portion and is softer than the first resin material.

Abstract: A rotary electric machine having at least one piece of electric equipment constituted by an overmolded or jacketed electric motor or by an overmolded or jacketed magnetic suspension system; the electric equipment including firstly a rotor (102) and secondly a stator (150) having pole pieces (154) and coils (152); the stator (150) being provided with at least one jacket (101) or coating (190) to protect it against an aggressive environment, on its face situated facing the rotor (102); the protective jacket (101) or coating (190) on the face of the stator (150) facing the rotor (102) presenting set-back portions (111) set back from the main surfaces (155) defining the airgap (e), these set-back portions (111) being distributed around the stator; and the movement of fluid circulating in the airgap around the rotor (102) being thus enhanced.

Abstract: A high-precision cylindrical coil having a high-precision fine coil pattern and a high mechanical precision such as fine roundness and no axial runout, and a cylindrical micrometer using the cylindrical coil are provided. In a cylindrical coil, a plurality of layers of coil patterns formed by filling the coil pattern grooves formed on a cylindrical substrate with a conductor and a plurality of insulating layers coating the cylindrical substrate are formed, the layers of coil patterns are electrically interconnected to each other by filling a through-hole formed by performing a hole forming process with a conductor, and the outmost layer is made of an insulating material.

Abstract: A motor stator is disclosed. Each of a first phase, second phase and third phase of three-phase winding has multiple toroidal coils and crossover wires connecting the coils. The crossover wire of the first phase runs inside the second phase coil and the third phase coil. The crossover wire of the second phase runs over the first phase coil with a guide by guide posts and runs inside the third phase coil. The crossover wire of the third phase runs over the first phase coil and the second phase coil with a guide by the guide posts.

Abstract: The invention relates to a gearbox drive unit (2), particularly for adjusting moving parts in a motor vehicle, comprising a gearbox housing (1), in which an output gear is rotatably supported on a bearing axle (4) extending perpendicular relative to a housing bottom (13). According to the invention, the bearing axle (4) is designed at least in sections as, at least in sections, a hollow metal bolt and/or as a multi-part, combined plastic/metal axle.

Abstract: A shell that mechanically supports the diode lead wires against movement both during assembly and subsequent operation of the rotor shaft. In addition, the present invention relates to a method for retaining diode lead wires in a power generator rotor by using the shell of the present invention.

Abstract: A motor comprises a rotor having a permanent magnet, a stator core having a stator coil and a frame for accommodating therein the rotor and the stator core. The stator coil has a shape of a concentrated winding being fitted and wound to a tooth of an one-slot core as one slot per one phase in the stator core and has a molded high thermal conductivity resin for covering the stator coil. Both end faces of the stator coil are respectively provided with insulating and heat-transfer layers which are constituted by a part of the molded high thermal conductivity resin, and each of the electric insulating and heat-transfer layers is put in contact with the frame.

Abstract: A rotor (24) for a rotary electric machine (20), mainly for the automotive industry, that comprises a front polar wheel (46N) and a rear polar wheel (46S), each polar wheel (46N, 46S) including claws (52) extending axially towards the other polar wheel (46N, 46S), each claw (52) of a polar wheel (46N, 46S) being circumferentially interleaved between two claws (52) of the other polar wheel (46N, 46S), at least two interpolar gaps (62) being provided between the side faces (60) opposite two consecutive claws (52), and at least two members (68) defining a magnetic barrier being provided in two interpolar gaps (62) associated on either side of a predetermined claw (52D). The front longitudinal ends (72) of the two members (68) are connected by a connector (82) in order to define an open chain (80).

Abstract: A linear actuator motor design including a rotor assembly that has an insert molded into a non-magnetic sleeve through a plurality of openings, which is kept from rotating within the non-magnetic sleeve by at least one opening arranged along the length of the non-magnetic sleeve which corresponds to at least one tab formed by the molded material of the insert and a stator assembly having a plurality of symmetrical and interchangeable magnetic pole plates. Each of the plurality of magnetic pole plates comprises a substantially planar plate portion with a central opening therein and a plurality of prongs extending from the central opening and substantially perpendicular to the plate portion. The prongs of the plurality of magnetic pole plates create an opening that is dimensioned to receive the rotor assembly therein. A non-conductive material is the molded over the plurality of magnetic pole plates.

Abstract: A stator and a rotor are oppositely arranged having a gap between the stator and the rotor in a direction parallel to a rotary shaft. The rotor has permanent magnets forming field magnetic poles and soft magnetic material segments to cover at least stator-facing surfaces of the respective permanent magnets. Each of the soft magnetic materials forms a composite part together with the permanent magnet. The rotor further has a disc-shaped nonmagnetic molded frame molded so as to cover the periphery of the composite part including the permanent magnet and the soft magnetic material segment while leaving a stator-facing surface of the soft magnetic material segment as an exposed surface. The composite part (including the permanent magnet and the soft magnetic material) and the nonmagnetic molded frame are integrated by molding of the molded material.

Abstract: A laminated core block includes a plurality of core members made of magnetic sheets stacked one on top of another, the plurality of core members including first and second core members which adjoin in a laminating direction, and a thermoplastic resin strand placed between the first and second core members. The thermoplastic resin strand is arranged to pass along one side surface of the first core member, between the first and second core members and along a side surface of the second core member on a side opposite to the aforementioned side surface of the first core member in this order. The first and second core members are bonded to each other by melting and curing the thermoplastic resin strand.

Abstract: A rotor assembly for an electromechanical device includes a molded wire support. The wire support has a body including a first side spaced from a second side and a hole extending through the sides and configured to receive a shaft. The body includes a wall about the hole extending to the first side. At least one end turn support extends outwardly from the wall and is configured to support wires. A molded pocket extends into the wall from the second side without penetrating through to the first side.

Abstract: A pump is driven by a compact electric motor in which a coil is disposed in a ring form around and along a stator core which has a plurality of claw magnetic poles that extend alternately from both ends of one member of the stator core toward the end of the other member thereof. A stator core can be made from a compressed powder core by molding with resin, with the molded portion able to serve as a partition separating pump and motor units.

Abstract: A brushless DC motor. The motor includes a rotating shaft, a bearing rotatably supporting the rotating shaft in radial directions, a support holder made of a plastic material and supporting both the lower end of the rotating shaft and the outer circumferential surface of the bearing, a rotor casing having a rotor magnet therein and rotated along with the rotating shaft, a stator mounted to the outer circumferential surface of the support holder so as to face the rotor magnet and rotating the rotor casing by mutual cooperation with the rotor magnet in response to electricity applied from an external power source, and a plate, to which the support holder is locked using a locking screw. The brushless DC motor has a simple structure and reduces the material cost and assembly cost.

Abstract: The invention relates to a permanent-magnetic rotor (2) for an electric motor, preferably for an internal rotor motor, that comprises a laminated core (3) consisting of several rotor sheets (4, 41, 5) that are stacked in the axial direction. Permanent magnets (8) are arranged in receiving pockets (7) formed by recesses (6) of the rotor sheets, the laminated core (3) being composed of at least two differently shaped types of rotor sheets (4, 4?, 5). Several rotor sheets (4, 41) of a first type of rotor sheet are provided as retaining sheets (4, 41) that respectively comprise a (central) yoke lamination section (13) that is connected or can be connected to the rotor shaft and respectively one or more (external) pole shoe sections (12) that are connected to the yoke lamination section (13) by one or more connecting bars (9, 9?, 10) or bar sections, and several rotor sheets (5) of a second type of rotor sheet are provided as intermediate sheets (5) without connecting bars.

Abstract: An electric water pump may include a stator generating a magnetic field according to a control signal and a rotor rotated by the magnetic field generated at the stator and pressurizing coolant. According to the electric water pump, the stator may include, a stator core formed by stacking a plurality of pieces made of a magnetic material, an insulator connecting pieces of the stator core to each other, a coil coiling the stator core so as to form a magnetic path, a Hall sensor detecting a position of the rotor, a Hall sensor board controlling the control signal supplied to the stator according to the position of the rotor detected by the Hall sensor, and a stator case wrapping and sealing the stator core, the insulator, the coil, the Hall sensor, and the Hall sensor board.

Abstract: Disclosed herein is a brushless DC motor. The brushless DC motor includes a rotating shaft, a bearing, an integrated washer holder, a rotor casing, a stator and a support plate. The bearing rotatably supports the rotating shaft in the radial direction. The integrated washer holder supports the lower end of the rotating shaft and the circumferential outer surface of the bearing. The rotor casing integrally rotates along with the rotating shaft. A rotor magnet is attached to the inner surface of the rotor casing. The stator is provided around the circumferential outer surface of the integrated washer holder such that the stator faces the rotor magnet. Thus, when external electric power is applied to the stator, the rotor casing is rotated by reciprocal action between the stator and the rotor magnet. The integrated washer holder is mounted to the support plate.

Abstract: A stator assembly and a method for making a stator assembly wherein the stator assembly is over-molded with thermally conductive and electrically insulating polymer composition. The stator core of the stator assembly is coated with adhesive component to provide higher heat transfer at the interface of stator core and over-molded insulator and coil.

Abstract: An objective is to provide a motor stator that may achieve: a reduction in parts costs by shaping coil ends so that length thereof is reduced, thereby reducing the amount of use of copper, and minimizing the amount of use of binding strings for securing the coil ends in place; a reduction in manufacturing process costs by a structure which allows a protector and a wire lead outlet part to be easily assembled; and then an improvement in quality of a stator by firmly holding the coil ends and the protector.

Abstract: An integrally molded plastic fan motor frame and sintered oil-impregnated bearing structure includes a plastic fan motor frame and a sintered oil-impregnated bearing integrally enclosed in a central tube of the frame, so that the integrally molded structure is solid and precise. In a method of manufacturing an integrally molded plastic fan motor frame and sintered oil-impregnated bearing structure, a sintered oil-impregnated bearing is prepared and disposed in a mold that is used to integrally form a plastic fan motor frame through injection molding, so that the sintered oil-impregnated bearing is integrally received in a central tube of the plastic fan motor frame when the latter is integrally molded. The integrally molded plastic fan motor frame and sintered oil-impregnated bearing structure is solid and can be easily manufactured at high precision to avoid deformation of the bearing due to compression in press-fitting as in the prior art.